Graham Irwin's Discussions (22)

Discussions Replied To (22) Replies Latest Activity

"Hammer and Hand make beautiful, high-end, super efficient and durable custom doors.…"

Graham Irwin replied Nov 27, 2015 to Energy Efficient Entry Door options out there?

25 Nov 28, 2015
Reply by Tauran Ivall

"Oh, and to eliminate the leaky "sweep" gasket at the sill, we used an outswing door…"

Graham Irwin replied Nov 27, 2015 to Energy Efficient Entry Door options out there?

25 Nov 28, 2015
Reply by Tauran Ivall

"On this Passivhaus retrofit in Santa Cruz (http://midorihaus.com) we used Plastpro (…"

Graham Irwin replied Nov 27, 2015 to Energy Efficient Entry Door options out there?

25 Nov 28, 2015
Reply by Tauran Ivall

"John, Interesting though, if you read this NREL article (https://financere.nrel.gov…"

Graham Irwin replied Oct 23, 2014 to How does efficiency factor into a grid parity world?

5 Oct 26, 2014
Reply by Bob Blanchette

"George, You raise a good question. The concept of "free and unlimited" energy is no…"

Graham Irwin replied Oct 23, 2014 to How does efficiency factor into a grid parity world?

5 Oct 26, 2014
Reply by Bob Blanchette

"http://www.nrel.gov/docs/fy14osti/61314.pdf http://www.nrel.gov/docs/fy13osti/55482.…"

Graham Irwin replied Sep 4, 2014 to Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace

14 Sep 4, 2014
Reply by Graham Irwin

"Great information, thank you!"

Graham Irwin replied Aug 5, 2014 to Whole House Fans - Love 'Em or Not?

73 Aug 14, 2014
Reply by Kurt Shafer

"Useful information is the Coefficient of Performance (COP) of the whole house fan vs…"

Graham Irwin replied Aug 5, 2014 to Whole House Fans - Love 'Em or Not?

73 Aug 14, 2014
Reply by Kurt Shafer

"Thanks for the input. The next question to ask is "how much cooling power is deliver…"

Graham Irwin replied Aug 1, 2014 to Whole House Fans - Love 'Em or Not?

73 Aug 14, 2014
Reply by Kurt Shafer

"Kurt, The "large fan" is a whole house fan moving anything from 1000-4000 CFM. By co…"

Graham Irwin replied Aug 1, 2014 to Whole House Fans - Love 'Em or Not?

73 Aug 14, 2014
Reply by Kurt Shafer

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Forum Discussions

Too many Heat Pump Water Heaters in a basement?

Started by Brad Cook in General Forum. Last reply by David Butler 18 hours ago. 9 Replies

How would you insulate this roof?

Started by David Butler in General Forum. Last reply by David Butler 19 hours ago. 2 Replies

Dirty solar panels

Started by Evan Mills in General Forum. Last reply by Stacie Bagnasco yesterday. 1 Reply

Fixing a water heater?

Started by John Shillito in Best Practices. Last reply by Eric Kjelshus on Friday. 21 Replies

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David Butler replied to Brad Cook's discussion Too many Heat Pump Water Heaters in a basement?
"theoretically, let's say you perfectly isolate the HPWH from a heat source. The HPWH's…"
18 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
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rCloud - The Future of Testing at Your Office or Home

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